This would have been mnemonized into a "Hail the sun , Father of the new day etc" in Click language . Common in Old societies .

What it did was to reset body-clocks .

Note that most old stone-age dwellings had an entrance facing East , so the declination of the Sun is immediately visible . (Location! , Location!)

Note that the base 60 is built into the heartbeat rhythm . Hence the 60x3x2=360 angles and time measurements . Egyptians had a fractal base 60 measurement of the year , day , hour and second we still use today .

Sentinel-clickers:Originally the old , lame or sick whose task was to keep on clicking one hard rock on another to provide echoes in the dark cave . The Sentinels .If they stopped , it was an automatic alarm .This evolved into the Priesthood . Remnants are still around ("Ten o'clock and all's well" , rituals that have to be continuously performed ,etc)

Archeological evidence : Look for anomalously worn hard rocks near the entrance of caves or inside relay distance . They will probably look like pestle-and-grinder , but long before agriculture They are Clickers .

Dino Felis .A sabre-toothed cat whose preferred prey was hominins . The reason why hominins hid in caves . (Humans rendered them extinct as a first order of business after ropes (ie weaving) was invented)

Priesthood classes would then have a much better hearing (especially in higher frequency click ranges) than normal humans . The Sacred Language .They were the frontline-clickers , and the first casualties if not alert enough .Hence the evolutionary selection .

This can be tested on the Cohens , a priesthood class that probably retains genes for click-hearing . San or Bantu ?

Artificial lighting .Homonins had another long period (about 1 million years) of fire . Light was available in the cave . The Clickers evolved into fire-keepers (on the way to priests) .But the problem of immediate orientation of mind and body on leaving the cave intensified .

A statistically large percentage of homonins sticking their befuddled heads out of cave will tend to be eaten . There was heavy selection pressure on immediate orientation .Click was it .

Flying Caves .Also known as planes .Why do think portholes are still included , against all reason ? Without them , jet lag will be really bad .

Flying Jet-Lag Reset Algorithm .1. Ask the pilot for the angle of the sun from the East .2. Close eyes , open eyes . Look out of the port hole and immediately double-tongue click the number of degrees . Stop .Repeat five times .3. That's it .

Alcohol and Caffeine .Caffeine is a dendritic accellarator and alcohol is an inhibition lowerer . With Click , they will speed the process . You can creep up on a deficit .